In Croatia, Zahrastnik families are generally Croats (from Zapresic area ), very rarely Slovenes (from Zagreb ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb.
Prevalence
About 20 people with faimily name Zahrastnik live in Croatia today, in five households only. There were 10 of them in the middle of the past century, and their number doubled. They are located in only four Croatian places: in Zagreb (<5), Zapresic (<5), and in Donji Laduc (<5) and Oplaznik (<5) in Zapresic area.
Outside Croatia
Family name Zahrastnik is present in three countries on two continents. The family name "Zahrastnik " is used by small number of people in the United States.